Hot-air furnace.



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HOT AIR FURNACE.

' (Application led Apr. 22, 1901.) (No Model.) 2 Sheets-Sheet l.

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(Apglcation mea Apr. 22, i901.)

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UNiTEn aries ATENT Ferca.

Y VILLIAM A. DISOTELL, OF BELVIDERE, ILLINOIS.

HOT-AIR FURNACE.

SPECIFICATION forming part of Letters Patent No.' 689,859, dated December 31, 1901.

Application filed April 22, 1901. Serial No. 56,995. (No model.)

T0 all whom t may concern:

Be it known that I, WILLIAM A. DISOTELL, a citizen of the United States of America, residing at Belvidere, in the county of Boone and State of Illinois, have invented certain new and useful Improvementsin Hot-Air-F urnaces, of which the following is a specification.

The object of my invention is to improve the interior construction of hot-air furnaces by so combining and arranging therein in a novel manner radiators, hot-air flues,asmoke iiue, a smoke-conduit, and a damper as to sufficiently retard the escape of the products of combustion from the combustion-chamber thereof to insure the largest possible elimination of heat therefrom; and it consists of certain new and useful features of construction and combinations of parts hereinafter fully described, and specifically pointed out in the claims.

Referring to the accompanying drawings, which form a part of this specification, Figure l is a central vertical section of a furnace embodying my improvements. Figs. 2, 3, and 4 are horizontal sections through the dotted lines 2, 3, and 4, respectively, in Fig. 1 of parts there shown. Fig. 5 is a sectional detail'showing a form of-joint employed for connecting the air-flues with the drum-radiator and lower portion of the combustion-chamber and also with the dome of the furnace.

Like letters of reference indicate corresponding parts throughout the several views.

A is the jacket of the furnace,which is provided with hot-air-eXit pipes A' and a coldair-inlet duct A2. y

B is a combustion-chamber having a plurality of openings B in the lower end B2 thereof and closed at its apex by means of a dome B3, also having a plurality of openings B therein. f

B5 is a re-pot integral or rigidly connected with the large central opening Bin thelower end B2 of the combustion-chamber B;

B7 B8 represent an ash-pit and' grate located immediately below the fire-pot B5.

C is a drum-radiator having-openings C' C2 in its upper and lower heads C3 C4, correspondingin number'and position with thev openings B4 B in the dome B3 and lower end B2 of the combustion-chamberB,respectively.

D represents air-dues connecting the openings B' in the lower end' B2 of the combustion-chamber B with' corresponding openings C2 in the lower head C4 of The drum-radiator C.

E represents air-hues connecting the openings B4 in the dome Bs'with the corresponding openings Cvin the upper head C3 0f the drum-radiator C.

F is an air-flue extending from a central 'opening F' in the upper head Cof the drumradiator C, through' the dome B3 and a smoke-r conduit, to be described hereinafter, into the air-chamber formed by the jacket A of the furnace.

G is a tubular radiator bisected by means of a smoke-conduit G', opening thereinto and combined therewith.

I-I is a smoke-flue connecting an opening II' in the dome B3 with an opening H2 in the smoke-conduit G'.

I is a damper in the smoke-conduit G for deflecting smoketherefrom through the tubular radiator G.

J is apipe connecting the interior of the combustion-chamber B through a suitable chimney with the out-erair.

J is a damper located in the pipe J.

K K are clean-outs. The air-flue D, Fig. 5, has an annular recess D" formed inthe end thereof concentric therewith. The hole C2 in the plate (E4-the ment L seals the flange C5into the annular recess' D, thereby forming a smoke-tight joint between the iiue D and the opening C2 in the bottom C4 of the drum-radiator@ All 'the air-fiues D and E are united in like manner with the parts with which they are connected. A

lThe construction of the combustion-chamber B and the arrangement therein of the airflues D, the drum-radiator C, and air-flues E as herein shown and described so retards the escape of the products of combustion there-- out as to Veliminate therefrom the largest possible amount of heat practicable. The emy ployment of the smoke-flue H, tubular radiator G, smoke-conduit G, and dam per I also results in a still further elimination o'f heat from the ascending and escaping products of combustion.

In Fig. l of the drawings the broken arrows indicate the movements of the hot airand the solid arrows the movements of the volatile products of combustion.

What I claim as new, and desire to secure by Letters Patent, is-

l. In a hot-air furnace, in combination, a combustion-chamber, having a plurality of openings, in the lower end thereof, and closed, at its apex, by means of a dome also having a plurality of openings therein, a druinradiator-inclnded wit-hin the combustion-chamber-having openings, in its upper and lower heads, corresponding, in number and position, with the openings, in the dome and lower portion of the combustion-chamber, respectively, a series of air-fines, connecting the openings in the lower end of the combustion-chamber with the corresponding;r openings in the lower head of the drum-radiator, a series oi" air-fines, connecting the openings in the dome with the corresponding openings in the upper head of the drum-radiator, and an air-Hue, extending from a central openingin the upper head of the drum-radiator, through the dome and smoke-conduit, into the airchamber formed by the jacket of the furnace, substantially as and for the purpose specified.

2. In a hot-air furnace, in combination, a combustion-chamber, closed at its apex by means of a dome, a tubular radiator-bisected by means of a smoke-conduit opening thereinto and combined therewith-located above the dome, a smoke-Hue connecting` an opening in the dome with an opening in the smoke-conduit, and a damper in the smokeconduit for deecting smoke therefrom through the tubular radiator, substantially as and for the purpose specified.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

VILLIAM A. DISOTELL. lVitnesses:

L. L. MORRISON, NELLIE BUNKER. 

